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<h1 id="概述"><a href="#概述" class="headerlink" title="概述"></a>概述</h1><p>本篇将介绍如下几个方面：</p>
<p>完成运营商后台广告类型管理与广告管理、完成前台工程广告轮播图的展示、使用SpringDataRedis操作字符串、set、List、hash等类型缓存、使用SpringDataRedis实现广告数据的缓存。</p>
<span id="more"></span>
<h1 id="广告管理"><a href="#广告管理" class="headerlink" title="广告管理"></a>广告管理</h1><h2 id="1-后台管理"><a href="#1-后台管理" class="headerlink" title="1.后台管理"></a>1.后台管理</h2><h3 id="1-1搭建广告工程"><a href="#1-1搭建广告工程" class="headerlink" title="1.1搭建广告工程"></a>1.1搭建广告工程</h3><p>基于高内聚低耦合的原则，我们需要单独搭建广告服务工程。</p>
<p>具体操作和创建pinyougou-sellergoods服务工程差不多，这里给出几点注意事项：</p>
<p>1、我们目前有两个服务工程，当两个工程同时启动时会发生端口冲突，因为连接dubbox注册中心的端口默认是20880。所以我们需要配置一下pinyougou-content-service工程的dubbox端口</p>
<p>2、由于需要用到上传服务，还需要添加common工具包的依赖</p>
<h3 id="1-2广告图片上传"><a href="#1-2广告图片上传" class="headerlink" title="1.2广告图片上传"></a>1.2广告图片上传</h3><p>将pinyougou-shop-web有关服务上传的资源拷贝到pinyougou-manager-web</p>
<p>在pinyougou-manager-web 的springmvc.xml中添加配置</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token comment">&lt;!-- 配置多媒体解析器 --&gt;</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>multipartResolver<span class="token punctuation">"</span></span>
      <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>org.springframework.web.multipart.commons.CommonsMultipartResolver<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>defaultEncoding<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>UTF-8<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>property</span><span class="token punctuation">&gt;</span></span>
    <span class="token comment">&lt;!-- 设定文件上传的最大值 5MB，5*1024*1024 --&gt;</span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>maxUploadSize<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>5242880<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>property</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>bean</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在contentController.js编写代码(注意引入uploadService)</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//上传广告图</span>
$scope<span class="token punctuation">.</span><span class="token function-variable function">uploadFile</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    uploadService<span class="token punctuation">.</span><span class="token function">uploadFile</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token keyword">if</span><span class="token punctuation">(</span>response<span class="token punctuation">.</span>success<span class="token punctuation">)</span><span class="token punctuation">{</span>
                $scope<span class="token punctuation">.</span>entity<span class="token punctuation">.</span>pic<span class="token operator">=</span>response<span class="token punctuation">.</span>message<span class="token punctuation">;</span>					
            <span class="token punctuation">}</span><span class="token keyword">else</span><span class="token punctuation">{</span>
                <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"上传失败！"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token punctuation">}</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">error</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            <span class="token function">alert</span><span class="token punctuation">(</span><span class="token string">"上传出错！"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>修改content.html实现上传功能</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>tr</span><span class="token punctuation">&gt;</span></span>            
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>td</span><span class="token punctuation">&gt;</span></span>图片<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>td</span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>td</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>file<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>file<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>button</span> <span class="token attr-name">ng-click</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>uploadFile()<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>上传<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>button</span><span class="token punctuation">&gt;</span></span>	                             
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>img</span> <span class="token attr-name">alt</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span><span class="token punctuation">"</span></span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{entity.pic}}<span class="token punctuation">"</span></span> <span class="token attr-name">height</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>100px<span class="token punctuation">"</span></span> <span class="token attr-name">width</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>200px<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>td</span><span class="token punctuation">&gt;</span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>tr</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="1-3广告类目选择"><a href="#1-3广告类目选择" class="headerlink" title="1.3广告类目选择"></a>1.3广告类目选择</h3><p>在contentController.js中添加代码</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//加载广告分类列表</span>
$scope<span class="token punctuation">.</span><span class="token function-variable function">findContentCategoryList</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    contentCategoryService<span class="token punctuation">.</span><span class="token function">findAll</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
        <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
            $scope<span class="token punctuation">.</span>contentCategoryList<span class="token operator">=</span>response<span class="token punctuation">;</span>				
        <span class="token punctuation">}</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在content.html 初始化调用此方法，将广告分类改为下拉列表</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>select</span>  <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>form-control<span class="token punctuation">"</span></span> <span class="token attr-name">ng-model</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>entity.categoryId<span class="token punctuation">"</span></span> <span class="token attr-name">ng-options</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>item.id as item.name  for item in contentCategoryList<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>select</span><span class="token punctuation">&gt;</span></span>  <span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<h3 id="1-4广告状态"><a href="#1-4广告状态" class="headerlink" title="1.4广告状态"></a>1.4广告状态</h3><p>修改content.html </p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>input</span>  <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>checkbox<span class="token punctuation">"</span></span> <span class="token attr-name">ng-model</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>entity.status<span class="token punctuation">"</span></span> <span class="token attr-name">ng-true-value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>1<span class="token punctuation">"</span></span> <span class="token attr-name">ng-false-value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>0<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<p>修改contentController.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">$scope<span class="token punctuation">.</span>status<span class="token operator">=</span><span class="token punctuation">[</span><span class="token string">"无效"</span><span class="token punctuation">,</span><span class="token string">"有效"</span><span class="token punctuation">]</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<h2 id="2-前台展示"><a href="#2-前台展示" class="headerlink" title="2.前台展示"></a>2.前台展示</h2><p>修改首页，当其轮播广告图根据后台设置的广告列表动态产生。</p>
<h3 id="2-1搭建门面工程"><a href="#2-1搭建门面工程" class="headerlink" title="2.1搭建门面工程"></a>2.1搭建门面工程</h3><p>创建war模块pinyougou-portal-web ，此工程为网站前台的入口，参照其它war模块编写配置文件。不需要添加SpringSecurity框架</p>
<p>pom.xml中配置tomcat启动端口为9103</p>
<h3 id="2-2后端实现"><a href="#2-2后端实现" class="headerlink" title="2.2后端实现"></a>2.2后端实现</h3><p>在pinyougou-content-interface工程ContentService接口增加方法定义</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 根据广告类型ID查询列表
	 * @param key
	 * @return
	 */</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span> <span class="token function">findByCategoryId</span><span class="token punctuation">(</span><span class="token class-name">Long</span> categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在pinyougou-content-service工程ContentServiceImpl类增加方法</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span> <span class="token function">findByCategoryId</span><span class="token punctuation">(</span><span class="token class-name">Long</span> categoryId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">TbContentExample</span> example <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">TbContentExample</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">Criteria</span> criteria <span class="token operator">=</span> example<span class="token punctuation">.</span><span class="token function">createCriteria</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    criteria<span class="token punctuation">.</span><span class="token function">andCategoryIdEqualTo</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    criteria<span class="token punctuation">.</span><span class="token function">andStatusEqualTo</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//条件：有效</span>
    example<span class="token punctuation">.</span><span class="token function">setOrderByClause</span><span class="token punctuation">(</span><span class="token string">"sort_order"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//排序</span>
    <span class="token keyword">return</span> contentMapper<span class="token punctuation">.</span><span class="token function">selectByExample</span><span class="token punctuation">(</span>example<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在pinyougou-portal-web创建控制器类 ContentController </p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RestController</span>
<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/content"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">ContentController</span> <span class="token punctuation">{</span>

	<span class="token annotation punctuation">@Reference</span>
	<span class="token keyword">private</span> <span class="token class-name">ContentService</span> contentService<span class="token punctuation">;</span>
	<span class="token comment">/**
	 * 根据广告分类ID查询广告列表
	 * @param categoryId
	 * @return
	 */</span>
	<span class="token annotation punctuation">@RequestMapping</span><span class="token punctuation">(</span><span class="token string">"/findByCategoryId"</span><span class="token punctuation">)</span>
	<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span> <span class="token function">findByCategoryId</span><span class="token punctuation">(</span><span class="token class-name">Long</span> categoryId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
		<span class="token keyword">return</span> contentService<span class="token punctuation">.</span><span class="token function">findByCategoryId</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>

<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="2-3前端代码"><a href="#2-3前端代码" class="headerlink" title="2.3前端代码"></a>2.3前端代码</h3><p>在pinyougou-portal-web工程创建contentService.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript">app<span class="token punctuation">.</span><span class="token function">service</span><span class="token punctuation">(</span><span class="token string">"contentService"</span><span class="token punctuation">,</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">$http</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
	<span class="token comment">//根据分类ID查询广告列表</span>
	<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function-variable function">findByCategoryId</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">categoryId</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		<span class="token keyword">return</span> $http<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"content/findByCategoryId.do?categoryId="</span><span class="token operator">+</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>	
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在pinyougou-portal-web创建contentController.js</p>
<pre class="line-numbers language-javascript" data-language="javascript"><code class="language-javascript"><span class="token comment">//广告控制层（运营商后台）</span>
app<span class="token punctuation">.</span><span class="token function">controller</span><span class="token punctuation">(</span><span class="token string">"contentController"</span><span class="token punctuation">,</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">$scope<span class="token punctuation">,</span>contentService</span><span class="token punctuation">)</span><span class="token punctuation">{</span>	
	$scope<span class="token punctuation">.</span>contentList<span class="token operator">=</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">;</span><span class="token comment">//广告集合	</span>
	$scope<span class="token punctuation">.</span><span class="token function-variable function">findByCategoryId</span><span class="token operator">=</span><span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">categoryId</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		contentService<span class="token punctuation">.</span><span class="token function">findByCategoryId</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">success</span><span class="token punctuation">(</span>
			<span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">response</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
				$scope<span class="token punctuation">.</span>contentList<span class="token punctuation">[</span>categoryId<span class="token punctuation">]</span><span class="token operator">=</span>response<span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">)</span><span class="token punctuation">;</span>		
	<span class="token punctuation">}</span>		
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>在body上添加指令</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>body</span> <span class="token attr-name">ng-app</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>pinyougou<span class="token punctuation">"</span></span> <span class="token attr-name">ng-controller</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>contentController<span class="token punctuation">"</span></span> <span class="token attr-name">ng-init</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>findByCategoryId(1)<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>
<p>修改首页轮播图</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>yui3-u Center banerArea<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
    <span class="token comment">&lt;!--banner轮播--&gt;</span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>myCarousel<span class="token punctuation">"</span></span> <span class="token attr-name">data-ride</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>carousel<span class="token punctuation">"</span></span> <span class="token attr-name">data-interval</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>4000<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>sui-carousel slide<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>ol</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>carousel-indicators<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>li</span> <span class="token attr-name">data-target</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#myCarousel<span class="token punctuation">"</span></span> <span class="token attr-name">data-slide-to</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{$index}}<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{$index==0?'active':''}}<span class="token punctuation">"</span></span> <span class="token attr-name">ng-repeat</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>item in contentList[1]<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>li</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>ol</span><span class="token punctuation">&gt;</span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>carousel-inner<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{$index==0?'active':''}} item<span class="token punctuation">"</span></span> <span class="token attr-name">ng-repeat</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>item in contentList[1]<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
                <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{item.url}}<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>
                    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>img</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{{item.pic}}<span class="token punctuation">"</span></span>  <span class="token punctuation">/&gt;</span></span>
                <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>a</span><span class="token punctuation">&gt;</span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>div</span><span class="token punctuation">&gt;</span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>这里首个循环需要增加class=”active”，效果是直接显示，否则可能页面会先出现一段空白，极不美观。</p>
<p>效果：</p>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20200730121831269.png" alt="image-20200730121831269" style="zoom:67%;"></p>
<h1 id="缓存解决方案"><a href="#缓存解决方案" class="headerlink" title="缓存解决方案"></a>缓存解决方案</h1><p>首页每天有大量的人访问，对数据库造成很大的访问压力，甚至是瘫痪。我们通常的做法有两种：一种是数据缓存、一种是网页静态化。我们今天讨论第一种解决方案。</p>
<h2 id="1-SpringDataRedis简介"><a href="#1-SpringDataRedis简介" class="headerlink" title="1.SpringDataRedis简介"></a>1.SpringDataRedis简介</h2><h3 id="1-1演变过程"><a href="#1-1演变过程" class="headerlink" title="1.1演变过程"></a>1.1演变过程</h3><p>1、<a target="_blank" rel="noopener" href="http://lib.csdn.net/base/redis"><strong>redis</strong></a>是一款开源的Key-Value<a target="_blank" rel="noopener" href="http://lib.csdn.net/base/mysql"><strong>数据库</strong></a>，运行在内存中，由ANSI C编写。企业开发通常采用Redis来实现缓存。同类的产品还有memcache 、memcached 、MongoDB等。</p>
<p>2、Jedis是Redis官方推出的一款面向<a target="_blank" rel="noopener" href="http://lib.csdn.net/base/java"><strong>Java</strong></a>的客户端，提供了很多接口供Java语言调用。可以在Redis官网下载，当然还有一些开源爱好者提供的客户端，如Jredis、SRP等等，推荐使用Jedis。</p>
<p>3、Spring-data-redis是spring大家族的一部分，提供了在srping应用中通过简单的配置访问redis服务，对reids底层开发包(Jedis,  JRedis, and RJC)进行了高度封装，RedisTemplate提供了redis各种操作、异常处理及序列化，支持发布订阅，并对spring 3.1 cache进行了实现。</p>
<p>spring-data-redis针对jedis提供了如下功能：<br>     1.连接池自动管理，提供了一个高度封装的“RedisTemplate”类<br>     2.针对jedis客户端中大量api进行了归类封装,将同一类型操作封装为operation接口<br>     ValueOperations：简单K-V操作<br>     SetOperations：set类型数据操作<br>     ZSetOperations：zset类型数据操作<br>     HashOperations：针对map类型的数据操作<br>     ListOperations：针对list类型的数据操作</p>
<h3 id="1-2配置"><a href="#1-2配置" class="headerlink" title="1.2配置"></a>1.2配置</h3><p>pom.xml需要引入Jedis和SpringDataRedis依赖</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token comment">&lt;!-- 缓存 --&gt;</span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>redis.clients<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>jedis<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>2.8.1<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.springframework.data<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>spring-data-redis<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span> 
		  <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>1.7.2.RELEASE<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span> 
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span>	<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>resources下创建properties文件夹，建立redis-config.properties</p>
<pre class="line-numbers language-properties" data-language="properties"><code class="language-properties"><span class="token attr-name">redis.host</span><span class="token punctuation">=</span><span class="token attr-value">127.0.0.1 </span>
<span class="token attr-name">redis.port</span><span class="token punctuation">=</span><span class="token attr-value">6379 </span>
<span class="token attr-name">redis.pass</span><span class="token punctuation">=</span><span class="token attr-value"> </span>
<span class="token attr-name">redis.database</span><span class="token punctuation">=</span><span class="token attr-value">0 </span>
<span class="token attr-name">redis.maxIdle</span><span class="token punctuation">=</span><span class="token attr-value">300 </span>
<span class="token attr-name">redis.maxWait</span><span class="token punctuation">=</span><span class="token attr-value">3000 </span>
<span class="token attr-name">redis.testOnBorrow</span><span class="token punctuation">=</span><span class="token attr-value">true </span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>maxIdle ：最大空闲数</p>
<p>maxWaitMillis:连接时的最大等待毫秒数</p>
<p>testOnBorrow：在提取一个jedis实例时，是否提前进行验证操作；如果为true，则得到的jedis实例均是可用的；</p>
<p>resources下创建spring文件夹 ，创建applicationContext-redis.xml</p>
<pre class="line-numbers language-markup" data-language="markup"><code class="language-markup"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">context:</span>property-placeholder</span> <span class="token attr-name">location</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>classpath*:properties/*.properties<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>   
<span class="token comment">&lt;!-- redis 相关配置 --&gt;</span> 
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>poolConfig<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>redis.clients.jedis.JedisPoolConfig<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>  
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>maxIdle<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.maxIdle}<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>   
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>maxWaitMillis<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.maxWait}<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>  
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>testOnBorrow<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.testOnBorrow}<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>  
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>bean</span><span class="token punctuation">&gt;</span></span>  
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>JedisConnectionFactory<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>org.springframework.data.redis.connection.jedis.JedisConnectionFactory<span class="token punctuation">"</span></span> 
      <span class="token attr-name"><span class="token namespace">p:</span>host-name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.host}<span class="token punctuation">"</span></span> <span class="token attr-name"><span class="token namespace">p:</span>port</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.port}<span class="token punctuation">"</span></span> <span class="token attr-name"><span class="token namespace">p:</span>password</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>${redis.pass}<span class="token punctuation">"</span></span> <span class="token attr-name"><span class="token namespace">p:</span>pool-config-ref</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>poolConfig<span class="token punctuation">"</span></span><span class="token punctuation">/&gt;</span></span>  

<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>redisTemplate<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>org.springframework.data.redis.core.RedisTemplate<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>  
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>property</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>connectionFactory<span class="token punctuation">"</span></span> <span class="token attr-name">ref</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>JedisConnectionFactory<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>  
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>bean</span><span class="token punctuation">&gt;</span></span>  <span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="1-3Value类型操作"><a href="#1-3Value类型操作" class="headerlink" title="1.3Value类型操作"></a>1.3Value类型操作</h3><pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RunWith</span><span class="token punctuation">(</span><span class="token class-name">SpringJUnit4ClassRunner</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span>
<span class="token annotation punctuation">@ContextConfiguration</span><span class="token punctuation">(</span>locations<span class="token operator">=</span><span class="token string">"classpath:spring/applicationContext-redis.xml"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">TestValue</span> <span class="token punctuation">{</span>
	<span class="token annotation punctuation">@Autowired</span>
	<span class="token keyword">private</span> <span class="token class-name">RedisTemplate</span> redisTemplate<span class="token punctuation">;</span>	
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		redisTemplate<span class="token punctuation">.</span><span class="token function">boundValueOps</span><span class="token punctuation">(</span><span class="token string">"name"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">"itcast"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
	<span class="token punctuation">}</span>	
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">getValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		<span class="token class-name">String</span> str <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundValueOps</span><span class="token punctuation">(</span><span class="token string">"name"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>str<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>	
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">deleteValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		redisTemplate<span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span><span class="token string">"name"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>	
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="1-4Set类型操作"><a href="#1-4Set类型操作" class="headerlink" title="1.4Set类型操作"></a>1.4Set类型操作</h3><pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@RunWith</span><span class="token punctuation">(</span><span class="token class-name">SpringJUnit4ClassRunner</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span>
<span class="token annotation punctuation">@ContextConfiguration</span><span class="token punctuation">(</span>locations<span class="token operator">=</span><span class="token string">"classpath:spring/applicationContext-redis.xml"</span><span class="token punctuation">)</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">TestSet</span> <span class="token punctuation">{</span>
	
	<span class="token annotation punctuation">@Autowired</span>
	<span class="token keyword">private</span> <span class="token class-name">RedisTemplate</span> redisTemplate<span class="token punctuation">;</span>
	
	<span class="token comment">/**
	 * 存入值
	 */</span>
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		redisTemplate<span class="token punctuation">.</span><span class="token function">boundSetOps</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">"曹操"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
		redisTemplate<span class="token punctuation">.</span><span class="token function">boundSetOps</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">"刘备"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>	
		redisTemplate<span class="token punctuation">.</span><span class="token function">boundSetOps</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">"孙权"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	
	<span class="token comment">/**
	 * 提取值
	 */</span>
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">getValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		<span class="token class-name">Set</span> members <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundSetOps</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">members</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>members<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	
	<span class="token comment">/**
	 * 删除集合中的某一个值
	 */</span>
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">deleteValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		redisTemplate<span class="token punctuation">.</span><span class="token function">boundSetOps</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token string">"孙权"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	
	<span class="token comment">/**
	 * 删除整个集合
	 */</span>
	<span class="token annotation punctuation">@Test</span>
	<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">deleteAllValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
		redisTemplate<span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span><span class="token string">"nameset"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="1-5List类型操作"><a href="#1-5List类型操作" class="headerlink" title="1.5List类型操作"></a>1.5List类型操作</h3><p>（1）右压栈</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 右压栈：后添加的对象排在后边
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testSetValue1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>		
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPush</span><span class="token punctuation">(</span><span class="token string">"刘备"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPush</span><span class="token punctuation">(</span><span class="token string">"关羽"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">rightPush</span><span class="token punctuation">(</span><span class="token string">"张飞"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span>

<span class="token comment">/**
	 * 显示右压栈集合
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testGetValue1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">List</span> list <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">range</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">/*起始位置，最后位置*/</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>list<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（2）左压栈</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 左压栈：后添加的对象排在前边
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testSetValue2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>		
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">leftPush</span><span class="token punctuation">(</span><span class="token string">"刘备"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">leftPush</span><span class="token punctuation">(</span><span class="token string">"关羽"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">leftPush</span><span class="token punctuation">(</span><span class="token string">"张飞"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span>

<span class="token comment">/**
	 * 显示左压栈集合
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testGetValue2</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">List</span> list <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist2"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">range</span><span class="token punctuation">(</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>list<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（3）根据索引查询元素</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 查询集合某个元素
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testSearchByIndex</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">String</span> s <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">index</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>s<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（4）移除某个元素的值</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 移除集合某个元素
	 */</span>
<span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testRemoveByIndex</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundListOps</span><span class="token punctuation">(</span><span class="token string">"namelist1"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">remove</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token string">"关羽"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<h3 id="1-6Hash类型操作"><a href="#1-6Hash类型操作" class="headerlink" title="1.6Hash类型操作"></a>1.6Hash类型操作</h3><p>（1）存入值</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testSetValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"a"</span><span class="token punctuation">,</span> <span class="token string">"唐僧"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"b"</span><span class="token punctuation">,</span> <span class="token string">"悟空"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"c"</span><span class="token punctuation">,</span> <span class="token string">"八戒"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span><span class="token string">"d"</span><span class="token punctuation">,</span> <span class="token string">"沙僧"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（2）提取所有的KEY</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testGetKeys</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">Set</span> s <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">keys</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>		
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>s<span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>运行结果：[a, b, c, d]</p>
<p>（3）提取所有的值</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testGetValues</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">List</span> values <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">values</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span>		
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>运行结果：[唐僧, 悟空, 八戒, 沙僧]</p>
<p>（4）根据KEY提取值</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testGetValueByKey</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token class-name">Object</span> object <span class="token operator">=</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span><span class="token string">"b"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>object<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>（5）根据KEY移除值</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Test</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">testRemoveValueByKey</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"namehash"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span><span class="token string">"c"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span></span></code></pre>
<h2 id="2-缓存广告数据"><a href="#2-缓存广告数据" class="headerlink" title="2.缓存广告数据"></a>2.缓存广告数据</h2><p>现在我们首页的广告每次都是从数据库读取，这样当网站访问量达到高峰时段，对数据库压力很大，并且影响执行效率。我们需要将这部分广告数据缓存起来。</p>
<h3 id="2-1读取缓存"><a href="#2-1读取缓存" class="headerlink" title="2.1读取缓存"></a>2.1读取缓存</h3><p>因为缓存对于我们整个的系统来说是通用功能。广告需要用，其它数据可能也会用到，所以我们将配置放在公共组件层（pinyougou-common）中较为合理。</p>
<p>配置可参照上文，配好后让pinyougou-content-service依赖pinyougou-common</p>
<p>修改 pinyougou-content-service的ContentServiceImpl</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Autowired</span> 
<span class="token keyword">private</span> <span class="token class-name">RedisTemplate</span> redisTemplate<span class="token punctuation">;</span>

<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span> <span class="token function">findByCategoryId</span><span class="token punctuation">(</span><span class="token class-name">Long</span> categoryId<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span> list <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">TbContent</span><span class="token punctuation">&gt;</span></span><span class="token punctuation">)</span> redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"content"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>list<span class="token operator">==</span><span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"从数据库读取数据放入缓存"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">TbContentExample</span> example <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">TbContentExample</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token class-name">Criteria</span> criteria <span class="token operator">=</span> example<span class="token punctuation">.</span><span class="token function">createCriteria</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        criteria<span class="token punctuation">.</span><span class="token function">andCategoryIdEqualTo</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
        criteria<span class="token punctuation">.</span><span class="token function">andStatusEqualTo</span><span class="token punctuation">(</span><span class="token string">"1"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//条件：有效</span>
        example<span class="token punctuation">.</span><span class="token function">setOrderByClause</span><span class="token punctuation">(</span><span class="token string">"sort_order"</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//排序</span>
        list<span class="token operator">=</span>contentMapper<span class="token punctuation">.</span><span class="token function">selectByExample</span><span class="token punctuation">(</span>example<span class="token punctuation">)</span><span class="token punctuation">;</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"content"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">,</span> list<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//存入缓存</span>
    <span class="token punctuation">}</span><span class="token keyword">else</span> <span class="token punctuation">{</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"从缓存读取数据"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>
    <span class="token keyword">return</span> list<span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p><img src="https://pluto-1300780100.cos.ap-nanjing.myqcloud.com/img/image-20200730170914785.png" alt="image-20200730170914785"></p>
<h3 id="2-2更新缓存"><a href="#2-2更新缓存" class="headerlink" title="2.2更新缓存"></a>2.2更新缓存</h3><p>当广告数据发生变更时，需要将缓存数据清除，这样再次查询才能获取最新的数据</p>
<p>修改pinyougou-content-service工程ContentServiceImpl.java 的add方法</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 增加
	 */</span>
<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">add</span><span class="token punctuation">(</span><span class="token class-name">TbContent</span> content<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    contentMapper<span class="token punctuation">.</span><span class="token function">insert</span><span class="token punctuation">(</span>content<span class="token punctuation">)</span><span class="token punctuation">;</span>	
    <span class="token comment">//清除缓存</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"content"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>content<span class="token punctuation">.</span><span class="token function">getCategoryId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>考虑到用户可能会修改广告的分类，这样需要把原分类的缓存和新分类的缓存都清除掉。</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
	 * 修改
	 */</span>
<span class="token annotation punctuation">@Override</span>
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">update</span><span class="token punctuation">(</span><span class="token class-name">TbContent</span> content<span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token comment">//查询修改前的分类Id</span>
    <span class="token class-name">Long</span> categoryId <span class="token operator">=</span> contentMapper<span class="token punctuation">.</span><span class="token function">selectByPrimaryKey</span><span class="token punctuation">(</span>content<span class="token punctuation">.</span><span class="token function">getId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getCategoryId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"content"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">)</span><span class="token punctuation">;</span>
    contentMapper<span class="token punctuation">.</span><span class="token function">updateByPrimaryKey</span><span class="token punctuation">(</span>content<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token comment">//如果分类ID发生了修改,清除修改后的分类ID的缓存</span>
    <span class="token keyword">if</span><span class="token punctuation">(</span>categoryId<span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token operator">!=</span>content<span class="token punctuation">.</span><span class="token function">getCategoryId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">longValue</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        redisTemplate<span class="token punctuation">.</span><span class="token function">boundHashOps</span><span class="token punctuation">(</span><span class="token string">"content"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">delete</span><span class="token punctuation">(</span>content<span class="token punctuation">.</span><span class="token function">getCategoryId</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span>	
<span class="token punctuation">}</span>	<span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>
<p>删除广告后清除缓存</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java">    <span class="token comment">/**
 * 批量删除
 */</span>
    <span class="token annotation punctuation">@Override</span>
    <span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">delete</span><span class="token punctuation">(</span><span class="token class-name">Long</span><span class="token punctuation">[</span><span class="token punctuation">]</span> ids<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">for</span><span class="token punctuation">(</span><span class="token class-name">Long</span> id<span class="token operator">:</span>ids<span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token comment">//清除缓存</span>
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<h1 id="结语"><a href="#结语" class="headerlink" title="结语"></a>结语</h1><p>对比数模学品优购真的是一种享受🤔</p>
<p>👴不想回建模了，拜拜了您嘞</p>
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